Determine the shear stress in each rivet in a lap joint made with six rivets, each of 8 mm diameter, when the joint is subject to a shear force of 1.5 kN. A double-cover butt joint has eight rivets,...

Determine the shear stress in each rivet in a lap joint made with six rivets, each of 8 mm diameter, when the joint is subject to a shear force of 1.5 kN.

A double-cover butt joint has eight rivets, each of 10 mm diameter. What will be the maximum shear force that can be applied to the joint if the shear stress in a rivet must not exceed 20 MPa?